Jack.



No. 891,959. PATENTEDJUNE 30, 1908.

A. SEARLS, DEGD.

L. A. SEAR-LS, EXEOUTBIX.

J AOK APPLICATION FILED JULY 1, 1904. RENEWED NOV.2. 1907- SHEETS-SHEET 1.

No. 891,959. PATENTED JUNE 30, 1908. A. SEARLS, DEGD. L. A. sums, nxBpUTmx.

JACK, APPLICATION FILED JULY I 1904. RENEWED NOV.2, 1907.

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I UNITED sTATEs PATENT OFFICE.

ANSON SEARLS, OF NEWARK, NEW JERSEY; LUCY A. SEARLS EXEOUTRIX OF SAID ANSON SEARLS, DECEASED.

JACK.

No. 891,959. Specification of Letters Patent. Patented June 30, 1908. Application filed July 1, 1904-, Serial No. 214,870. Renewed November 2, 1907. Serial No. 400,379.

To all whom it may concern: to take under an axle not over 101,- inches Be it known that I, ANsoN SEARLS, a citihigh, as required for the average light autozen of the UnitedStates of America, residing mobile car, then it could not well operate at Newark, in the county of Essex and State one much over 18 inches high, on the heavof New Jersey, have invented certain new 1 ier class of motor cars, and as it is some- 60 and useful Improvements in Jacks, of which times desirable to lift an automobile with the following is a specification, reference a high wheel, or a carriage whose axle is being had to the accompanyi g drawings, more than 18 inches from the ground, the

forming part of the same, in which jack above described would be unequal to Figure 1 is a side elevation of a jack emthe task and a larger one would be needed, 65 bodying my invention; Fig. 2, is a side elebut a larger one takes up too much space. vation of the rack proper, of such jack; Fig. I have therefore devised one in which the 3, is a side elevation of the extension or telerack is hollow (or in the form of a hollow U scopic section; Fig. i, is a sectional view of shaped trough) and I have constructed anthe rack, showing the lugs for holding the other, or telescopic section, adapted to lit m 70 extension; Fig. 5 is a sectional view of the \said trough, and to lie substantially wholly extension section; and Figs. 6 and 7, are inclosed therein, when a low axle is to be sectional views of the rack and the telescopic raised or the device is to be storedin the tool Section, Fig. 7 showing them arranged as they box, and yet susceptible of extension thereln are when the section is partially extended, to almost its full length, when that is desired, 7 5 and Fig. 6 showing them shut closely toand I have so formed it that the parts are gether. nevertheless capable of folding into a very My invention relates to lifting jacks and small compass when not in use. Much study consists in the combination with the rack, and experiment has been required to provide of a telescopic section, arranged to be inparts which would be thus operative and yet 80 closed within and slide up and down in the furnish the strength required of jacks in the rack section, so that the range of usefulness severe service to which these are subjected. of the jack may be greatly extended, without First, I form the rack in the form of a hollow increasing the parts or the weight any contrough with sides and bottom, or front, the

siderable number or amoun front being preferably constructed so as to 85 The form of jack with which I show the constitute rungs, bars or steps into which the invention is one I have devised, adapted to hooks may take. Then I form lugs, preferfold into small compass, and fully described ably two, Z, 1 on the rear of the bottom (or and shown in my U. S. Letters Patent No. front) wall of the rack projecting upward, and

7 82421 issued Feb. 14, 1905. a third Z, projecting from a brace b, which 90 It consists among other parts of a rack It, extends across from one side of the rack to supported in a head H, which in turn is supthe other, at the top. Then I form a teleported on legs L L. The rack operated by scopic section T, also (preferably) in the form pawls or hooks P, P, and an arm or lever of a hollow trough, corresponding in shape to A, the rack being lifted or lowered by a step the rack, and provided with a head h, and 90 by step movement, one pawl secured to the with a ertures a, adapted to receive the lugs lever A, and successively taking into the Z, l, t e bottom of the head h, and the top teeth of the rack to lift or lower the load, and of the rack being shaped to conform, one to the other pawl secured to the head H, also the other, when the extension is down, at

taking successively into the teeth of the rack which time lug I will take under and assist in and holding the load while the lever is 0 ersu porting the head h, of the part T. New

ated to shift the first pawl from one teeth of I s lde the section T into the rack portion R,

said rack to another. But it is desirable and then, swinging the lower end out of the that such a jack be susceptible of carrying trough of rack R, I preferably drive a pin p or storing in a limited space, and that necesthrough the walls of the part T, the result of sarily limits the range of a jack that has only which is that the rack cannot be lost out of a simple head and legs and rack. The limit its place, for the pin p will contact with lug of its range can not be more than, indeed i 1 when tlie extension is drawn nearly out and will prevent further movement in that can not be quite, double that of its short- 5 est condition. Thus, if one is constructed direction. The head h, is preferably given a generally concave form with scallops, as shown, to insure its taking and holding under any axle or clip upon the body that it may be desired to lift.

The operation is manifest. If the jack is set up and the body to be raised is low, the rack and section T are left in the position shown in Fig. 6 and the lifting is done substantially as though there were no telescopic section. If the body to be raised, (for instance, the axle of a carriage) is higher than the range of the jack and rack R, then it is only necessary upon setting up the jack to pull up the section T, till it nearly reaches the desired height or (preferably) a little more than the distance from the top of the rack, when extended, to the axle; to then seat section T on the lugs Z Z by passing them'into aperture a, to then place the thus extended jack (in the position of Fig. 1 for instance) under the axle and operate the lever A, to further raise the jack and section T and lift the vehicle. I have thereby produced a jack which, though it may be shut into a space 12 inches by 3 by 2%, or less may also be readily extended so as to lift axles or other bodies ranging from the axle of a heavy wheel (with collapsed tire) whose diameter is 28 inches to one of a horse drawn carriage whose diameter is 50 inches, (the highest horse drawn carriage wheels), and that too without adding but one part, and only about 2%, per cent. to the weight, of the jack.

that I claim as my invention and desire to secure by Letters Patent is,

1. A lifting jack provided with a hollow rack and a telescopic extension inclosed therein, each of said parts being provided with engaging devices arranged to take one into the other and to hold the parts in an extended position, combined with means for lifting said rack and extension, all substantially as set forth.

2. A lifting jack provided with a rack in the form of a trough, a telescopic section, also in the form of a trough and adapted to fit within the rack as described, each of said parts being provided with engaging devices arranged to take one into the other and to hold the parts in an extended position.

3. A lifting jack provided with a hollow rack combined with a hollow telescopic section, one provided with lugs and the other with apertures adapted to. engage said lugs all substantially as set forth.

4. A lifting jack provided with a hollow rack combined with a hollow telescopic section, said section being provided with a head at the top, and apertures in its wall and said rack being provided with a top which fits the bottom of the telescopic section head, and lugs which are adapted to engage the apertures in the telescopic section, all substantially as set forth.

5. A lifting jack provided with a rack in the form of a trough combined with a telescopic section in the form of a trough, each part provided with engaging devices arrangec to take one into the other and to hold the parts in an extended position, and stops adapted as described to prevent the entire separation of the parts, all substantially as set forth.

I11 testimony whereof, I have signed my name to this specification in the presence of two subscribing witnesses, this fifteenth day of June 1904.

AN SON SEARLS.

Witnesess:

WILLIAM KIMBERLEY, A. G. N. VERMILYA. 

